Handles of screwdrivers are made of different materials. The archetype had one made of wood. Later handles made of translucent polyacetate and polybutyrate were made. After these handles were made of several materials such as polypropene combined with the rubbery TPE or TPR. Facom (nowadays part of Stanley) introduces Protwist screwdrivers with handles made of polyurethane. I am anxious to know more about these. Using different colours, these drivers are easy to distinguish for their application. But other manufacturers are producing these colour schemes already for quite some time. The design itself is promising.
More on Facom Protwist on: www.pro.facom.fr/CatalogueGeneral/Catalogue/PAG-CAT-03.aspx ..